In order to investigate how fibers affect asphalt binder in low-temperature ductility, shear resistance, apparent viscosity and high-temperature rheology, ductility test, cone penetration test, Brookfield viscosity test and dynamic shear rheology test were applied and total adding mass and volume ratio of two type of fibers were considered. And cross sections morphology of samples were observed by scanning electronic microscope. Results showed that increasing addition of fibers could reduced low-temperature ductility. Viscosity was improved by increasing fiber addition but improvement seemed slower when adding proportion was close to 6%; while shear resistance and rut factor (G*/sinδ) performed better when volume ratio of steel wool and brucite fiber was 6/4.Therefore,rutting resistance can be improved by viscosity growth and bridging induced by well dispersion and interaction between binder and fibers.
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